| 摘要 |
PURPOSE:To position the focus of a laser beam with ease and high accuracy in a short time by observing the realtive position between the forcus of the laser beam irradiated to near the groove line and the groove line and controlling the positioning of a laser working head. CONSTITUTION:A laser beam 1 is irradiated from a laser working head 2 to near the groove line 6 of a work 3, and the positional relation between the focus F of the beam 1 and the line 6 is observed with an image pickup device 8. The result A of such observation is outputted to a television 11 for monitor and an image processing unit 9. The unit 9 determines the relative position of the focus F and the line 6 in accordance with the result A, calculates the required extent of the movement of the head 2 necessary for making the focus F and the line 6 coincident from the positional deviation determined in such a way and outputs a command signal B to a control device 10 for the laser working head. The device 10 outputs a driving signal C in accordance with the signal B and controls the positioning of the head 2 and the line 6. |
